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Authors
Saha, Avijit
Sarker, Malabika
Kabir, Moktadir
Lu, Guangyu
Müller, Olaf
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Article History
Received: 11 January 2019
Accepted: 19 June 2019
First Online: 25 June 2019
Ethics approval and consent to participate
: Ethical clearance for the study was provided from the Ethical Committee of the Medical School at the University of Heidelberg, Germany, as well as from the Institutional Review Committee of BRAC James P. Grant School of Public Health, BRAC University, Bangladesh. Informed written consent was taken from all participants where all the risks and benefits for participating in the study were mentioned following the Helsinki Declaration.
: The authors declare that they have no competing interests.
